<template>
  <div class="app-container">
    <el-form :inline="true">
      <el-form-item label="菜单名称">
        <el-input
          v-model="queryParams.menuName"
          placeholder="请输入菜单名称"
          clearable
          size="small"
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="状态">
        <el-select v-model="queryParams.status" placeholder="菜单状态" clearable size="small">
          <el-option
            v-for="dict in statusOptions"
            :key="dict.dictValue"
            :label="dict.dictLabel"
            :value="dict.dictValue"
          />
        </el-select>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button v-hasPermi="['system:menu:add']" type="primary" icon="el-icon-plus" size="mini" @click="handleAdd(null, 'C')">添加菜单</el-button>
      </el-form-item>
    </el-form>

    <el-table
      v-loading="loading"
      :data="menuList"
      row-key="id"
      :tree-props="{children: 'children', hasChildren: 'hasChildren'}"
    >
      <el-table-column prop="menuName" label="菜单名称" :show-overflow-tooltip="true" width="160" />
      <el-table-column prop="icon" label="图标" align="center" width="100">
        <template #default="scope">
          <svg-icon :icon-class="scope.row.icon" />
        </template>
      </el-table-column>
      <el-table-column prop="seq" label="排序" width="60" />
      <el-table-column prop="perms" label="权限标识" :show-overflow-tooltip="true" />
      <el-table-column prop="component" label="组件路径" :show-overflow-tooltip="true" />
      <el-table-column prop="status" label="状态" :formatter="statusFormat" width="80" />
      <el-table-column label="创建时间" align="center" prop="createTime">
        <template #default="scope">
          <span>{{ $dy_parseTime(scope.row.createTime) }}</span>
        </template>
      </el-table-column>
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template #default="scope">
          <el-button
            v-hasPermi="['system:menu:edit']"
            style="color: #ffba00"
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
          >修改</el-button>
          <el-button
            v-show="scope.row.menuType !== 'F' && !checkIsLinkExternal(scope.row.path) && checkIsDir(scope.row.component)"
            v-hasPermi="['system:menu:add']"
            size="mini"
            type="text"
            icon="el-icon-plus"
            @click="handleAdd(scope.row, 'C')"
          >菜单</el-button>
          <el-button
            v-show="scope.row.menuType !== 'F' && !checkIsLinkExternal(scope.row.path) && !checkIsDir(scope.row.component)"
            v-hasPermi="['system:menu:add']"
            style="color: #13ce66"
            size="mini"
            type="text"
            icon="el-icon-plus"
            @click="handleAdd(scope.row, 'F')"
          >按钮</el-button>
          <el-button
            v-show="scope.row.children == null"
            v-hasPermi="['system:menu:remove']"
            style="color: #ff4949"
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
          >删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <!-- 添加或修改菜单对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="600px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-row>
          <el-col :span="24">
            <el-form-item label="上级菜单">
              <treeselect
                :key="form.id"
                v-model="form.parentId"
                :options="treeSelectList"
                :disabled="form.id == null"
                :normalizer="normalizer"
                :clearable="false"
                :show-count="true"
                placeholder="选择上级菜单"
              />
            </el-form-item>
          </el-col>
          <el-col :span="24">
            <el-form-item v-if="form.menuType != 'F'" label="菜单图标">
              <el-popover
                placement="bottom-start"
                width="460"
                trigger="click"
                @show="$refs['iconSelect'].reset()"
              >
                <IconSelect ref="iconSelect" @selected="selected" />
                <el-input slot="reference" v-model="form.icon" placeholder="点击选择图标" readonly>
                  <svg-icon
                    v-if="form.icon"
                    slot="prefix"
                    :icon-class="form.icon"
                    class="el-input__icon"
                    style="height: 32px;width: 16px;"
                  />
                  <i v-else slot="prefix" class="el-icon-search el-input__icon" />
                </el-input>
              </el-popover>
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="菜单名称" prop="menuName">
              <el-input v-model="form.menuName" placeholder="请输入菜单名称" />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="显示排序" prop="seq">
              <el-input-number v-model="form.seq" controls-position="right" :min="0" />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item v-if="form.menuType != 'F'" label="路由地址" prop="path">
              <el-input v-model="form.path" placeholder="请输入路由地址" @blur="checkAndSetExternal()" />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item v-if="form.menuType != 'F' && checkAndSetExternal()" prop="component" label="外链组件">
              <el-select v-model="form.component" placeholder="请选择外链组件">
                <el-option
                  v-for="dict in linkComponentOptions"
                  :key="dict.dictValue"
                  :label="dict.dictLabel"
                  :value="dict.dictValue"
                />
              </el-select>
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item v-if="form.menuType != 'F' && !checkAndSetExternal()" prop="component" label="目录组件">
              <el-select v-model="form.component" :clearable="true" placeholder="请选择目录组件">
                <el-option
                  v-for="dict in dirComponentOptions"
                  :key="dict.dictValue"
                  :label="dict.dictLabel"
                  :value="dict.dictValue"
                />
              </el-select>
            </el-form-item>
          </el-col>
          <el-col v-if="form.menuType != 'F'" :span="12">
            <el-form-item label="组件路径" prop="component">
              <el-input v-model="form.component" :clearable="true" placeholder="请输入组件路径" />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item v-if="form.parentId != 0" label="权限标识">
              <el-input v-model="form.perms" placeholder="请权限标识" maxlength="50" />
            </el-form-item>
          </el-col>
          <el-col :span="24">
            <el-form-item v-if="form.menuType != 'F'" label="菜单状态">
              <el-radio-group v-model="form.status">
                <el-radio
                  v-for="dict in statusOptions"
                  :key="dict.dictValue"
                  :label="dict.dictValue"
                >{{ dict.dictLabel }}</el-radio>
              </el-radio-group>
            </el-form-item>
          </el-col>
        </el-row>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { addMenu, getMenu, listMenu, updateMenu, delMenu } from '@/api/system/menu'
import { isExternal } from '@/utils/validate'
import Treeselect from '@riophae/vue-treeselect'
import '@riophae/vue-treeselect/dist/vue-treeselect.css'
import IconSelect from '@/components/IconSelect'

export default {
  name: 'Menu',
  components: { Treeselect, IconSelect },
  data() {
    return {
      // 遮罩层
      loading: true,
      // 菜单表格树数据
      menuList: [],
      treeRoot: { id: 0, label: '根目录', children: [] },
      treeSelectList: [],
      componentOption: undefined,
      linkComponentOptions: [{
        'dictLabel': '外部打开',
        'dictValue': 'Layout'
      }, {
        'dictLabel': '内部打开',
        'dictValue': 'components/iframe/index'
      }],
      dirComponentOptions: [{
        'dictLabel': '主页布局',
        'dictValue': 'Layout'
      }, {
        'dictLabel': '嵌套菜单',
        'dictValue': 'components/nested/index'
      }],
      // 弹出层标题
      title: '',
      // 是否显示弹出层
      open: false,
      // 菜单状态数据字典
      statusOptions: [{
        'dictLabel': '显示',
        'dictValue': 0
      }, {
        'dictLabel': '隐藏',
        'dictValue': 1
      }, {
        'dictLabel': '停用',
        'dictValue': 2
      }],
      // 查询参数
      queryParams: {
        menuName: undefined,
        visible: undefined
      },
      // 表单参数
      form: {},
      // 表单校验
      rules: {
        menuName: [
          { required: true, message: '菜单名称不能为空', trigger: 'blur' }
        ],
        menuType: [
          { required: true, message: '菜单类型不能为空', trigger: 'blur' }
        ],
        seq: [
          { required: true, message: '菜单顺序不能为空', trigger: 'blur' }
        ],
        path: [
          { required: true, message: '路由地址不能为空', trigger: 'blur' }
        ]
      }
    }
  },
  created() {
    this.getList()
  },
  methods: {
    // 选择图标
    selected(name) {
      this.form.icon = name
    },
    /** 查询菜单列表 */
    getList() {
      this.loading = true
      listMenu(this.queryParams).then(response => {
        this.menuList = response.data
        this.loading = false
      })
    },
    getTreeSelectList() {
      const query = { menuType: 'C' }
      listMenu(query).then(response => {
        this.treeRoot.children = response.data
        this.treeSelectList = []
        this.treeSelectList.push(this.treeRoot)
      })
    },
    checkIsDir(component) {
      return this.dirComponentOptions.some(v => {
        return v.dictValue === component
      })
    },
    checkAndSetExternal() {
      if (this.checkIsLinkExternal(this.form.path)) {
        this.form.isExternal = 1
        return true
      } else {
        this.form.isExternal = 0
        return false
      }
    },
    checkIsLinkExternal(path) {
      return isExternal(path)
    },
    /** 转换菜单数据结构 */
    normalizer(node) {
      if (node.children && !node.children.length) {
        delete node.children
      }
      node.isDisabled = false
      // 修改：当前是菜单，上级菜单不支持按钮
      if (this.form.menuType === 'C' && node.menuType === 'F') {
        node.isDisabled = true
      }
      // 修改：当前是菜单，上级菜单不能是自己的下级
      if (this.form.menuType === 'C' && node.id === this.form.id) {
        delete node.children
      }
      // 修改：当前是菜单，上级菜单必须是目录
      if (this.form.menuType === 'C') {
        // 上级菜单不支持非目录的菜单
        if (node.id !== 0 && (!this.checkIsDir(node.component) || this.checkIsLinkExternal(node.path))) {
          node.isDisabled = true
        }
      }
      // 修改：当前是按钮，上级菜单不能是链接
      if (this.form.menuType === 'F' && this.checkIsLinkExternal(node.path)) {
        node.isDisabled = true
      }
      return node
    },
    // 菜单状态字典翻译
    statusFormat(row, column, cellValue, index) {
      if (row.menuType === 'F') {
        return ''
      }
      return this.$dy_selectDictLabel(this.statusOptions, cellValue)
    },
    // 取消按钮
    cancel() {
      this.open = false
      this.treeSelectList = []
      this.reset()
    },
    // 表单重置
    reset() {
      this.form = {
        id: undefined,
        parentId: 0,
        menuName: undefined,
        menuType: 'C',
        icon: undefined,
        seq: undefined,
        isExternal: 0,
        status: 0
      }
      this.$dy_resetForm('form')
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.getList()
    },
    /** 新增按钮操作 */
    handleAdd(row, addMenuType) {
      this.reset()
      // 当前新增表单的按钮类型
      this.form.menuType = addMenuType
      this.title = '添加按钮'
      if (addMenuType === 'C') {
        this.title = '添加菜单'
      }
      if (row != null) {
        this.getTreeSelectList()
        // 当前新增表单的上级
        this.form.parentId = row.id
      } else {
        // 新建上级目录
        this.treeSelectList = []
        this.treeSelectList.push(this.treeRoot)
      }
      this.open = true
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset()
      this.title = '修改按钮'
      if (row.menuType === 'C') {
        this.title = '修改菜单'
      }
      this.getTreeSelectList()
      getMenu(row.id).then(response => {
        this.form = response.data
        this.open = true
      })
    },
    submitForm: function() {
      this.$refs['form'].validate(valid => {
        if (valid) {
          if (this.form.id != null) {
            updateMenu(this.form).then(response => {
              if (response.code === 200 || response.code === 1) {
                this.$dy_msgSuccess('修改成功')
                this.open = false
                this.getList()
              }
            })
          } else {
            addMenu(this.form).then(response => {
              if (response.code === 200 || response.code === 1) {
                this.$dy_msgSuccess('新增成功')
                this.open = false
                this.getList()
              }
            })
          }
        }
      })
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      this.$confirm('是否确认删除名称为"' + row.menuName + '"的数据项?', '警告', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(function() {
        return delMenu(row.id)
      }).then(() => {
        this.$dy_msgSuccess('删除成功')
        this.handleQuery()
      }).catch(function() {})
    }
  }
}
</script>
